A "bug" was recently brought up in Pokemon Showdown: My reply: So I misremembered how the DS handles Gen V battles, but the point remains valid: there is no reason why we should be playing by Nintendo's rules for 6v6 Singles battles. We already enforce sleep clause and evasion clause and form our own banlists. Why should we go by Nintendo's rule of what constitutes a victory? This is definitely not a trivial issue: not only does it affect our simulators and their ladders, but I would imagine this would be an issue as well for non-VGC Wi-Fi tournaments. So what is the Smogon policy on what constitutes a victory and what constitutes a tie? Should we be aiming for 100% accuracy with our simulators, or can we use our better judgement? My personal feeling is that we should play by "PBR" rules: a battle ends in a tie if neither player has any remaining pokemon at the end of the battle, UNLESS one player has used a move such as Explosion or Destiny Bond to achieve this effect ("Self-KO" clause).